Seal joint between two identical profiled sections and the associated mitre-joint construction

ABSTRACT

A method for sealingly connecting two identical sections of a door frame or the like one adjoining the other at a mitre-angle of 45*, the clamping means for drawing the adjoining flanges of the profiled sections one to the other being clamped between abutments provided on said flanges and the webs of the profiled sections adjoining each other at the mitre-joint, a part of said clamping means extending over the webs.

United States Patent [191 Van Wieringen 1 Sept. 17, 1974 SEAL JOINTBETWEEN TWO IDENTICAL PROFILED SECTIONS AND THE ASSOCIATED MITRE-JOINTCONSTRUCTION Inventor: Gijsbertus L. Van Wieringen,

Amersfoort, Netherlands Assignee: N.V. Nederlandse MetaalindustriePolynorm, Bunschoten, Netherlands Filed: Oct. 26, 1972 Appl. No.:301,217

US. Cl. 52/758 H, 403/401 Int. Cl. Fl6b 3/00 Field of Search 52/753 C,753 D, 758 H,

References Cited UNITED STATES PATENTS 5/1957 Olsen 52/475 X 3,189,1366/1965 Stickney 52/753 D 3,269,068 8/1966 King... 403/401 X 3,289,34112/1966 Howell 52/758 H 3,523,703 8/1970 Handley 52/758 H 3,604,7399/1971 Carlisle 52/656 X Primary Examiner-Werner H. Schroeder Attorney,Agent, or Firm--James E. Nilles [5 7 ABSTRACT 4 Claims, 3 DrawingFigures SEAL JOINT BETWEEN TWO IDENTICAL PROFILED SECTIONS AND THEASSOCIATED MITRE-JOINT CONSTRUCTION DISCUSSION OF THE PRIOR ART Theinvention relates to a method for making a seal joint between twoidentical profiled sections for example of a door frame, one adjoiningthe other at a mitreangle of 45, each profiled section consisting of aweb and at least one flange making an angle with said web.

The known method is disadvantageous in this way that the joint betweenthe adjoining webs of the profiled section is not sealed exactly,whereas it is of great advantage for the appearance of the frame or thelike to be formed from the profiled sections to seal said joint veryexactly, in particular when finally the profiled sections should befinished by applying thereon an electrostatic spray of powder.

SUMMARY OF THE INVENTION It is an object of the invention to provide amethod forsealingly connecting two identical profiled sections of a doorframe or the like one adjoining the other at a mitre-joint of 45, eachprofiled section including a web and at least one flange making an anglewith said web.

This object is obtained according to the invention in that the clampingmeans for drawing the adjoining flanges of the profiled sections one tothe other is clamped between abutments provided on said flanges and thewebs of the profiled sections adjoining each other at the mitre-joint, apart of said clamping means extending over the webs.

It is a further object of the invention to provide a method forsealingly connecting two identical profiled sections of a door frame orthe like each section having two flanges in that the clamping pressureof the clamping means between the flanges and the webs of the profiledsections is transmitted via a resilient covermember extending along theentire length of the mitre joint between said webs.

The invention also provides a mitre-joint construction for carrying outthe method according to the invention, said mitre-joint constructioncomprising clamping means adapted to be arranged on flanges of profiledsections adjacent the joint said clamping means comprising a flatclamping plate having at one end a recess profiled in accordance withthe angle between the webs of the profiled sections at the mitrejoint,the other end of said plate being provided with another recess forengaging cams disposed on the said flanges of the profiled sections, sothat the clamping plate can be placed in respect of the plane of theflanges in an oblique direction between the webs and the cams, whereuponby driving the flat clamping plate as close to the plane of the flangesas possible the said plate is clamped between the webs and the cams,whereby the mitre-joint between the flanges as well as the mitre-jointbetween the webs is sealed.

When the mitre-joint is used for interconnecting two profiled sectionseach comprising two flanges, two flat clamping platesare required tointerconnect each set of flanges and the plates can, advantageously, becombined with a resilient cover-member engaging a marginal section ofeach web at the mitre-joint between the webs of the profiled sections,the profile of the first mentioned recess corresponding to at least thatpart of the outer surface of the cover-member covering the joint.

As a result the cover-member is gripped at its upper and lower end by aclamping plate, and thus the entire length of the flanges of the covermember press against the webs of the profiled sections, whichconsequently further enhances uniform sealing of the longitudinal jointbetween said webs over the entire length thereof.

Moreover it is possible to apply the present invention to two profiledsections each of which is provided with one flange only, only one flatclamping plate being employed together with a resilient cover member thecover member being fixed at one end by the clamping plate, the remainderof the cover plate resting loosely on the marginal sections of the websadjacent the mitre-joint. The cover-member preferably consists of twoflanges interconnected one with the other by means of a convex ridgeextending longitudinally thereof. With this embodiment the or eachclamping plate can be more securely engaged with the covermember and theresilient properties of the cover member are employed more usefully.

SURVEY OF THE DRAWINGS FIG. 1 shows, partly in section, a finishedmitre-joint construction between two profiled sections according to FIG.2, the connecting means provided on the profiled sections shown thickeras in reality for the sake of clarity.

FIGS. 2 and 3 show respectively a sectional view along the lines IIIIand III-III respectively, in FIG. 1, on a larger scale.

DESCRIPTION OF PREFERRED EMBODIMENTS Referring to the drawings identicalprofiled sections 1 and la of, for instance, a door frame adjoin eachother by a mitre-joint 2 at an angle of 45. A plate 5 is secured to aflange 3 of the section I (see FIG. I) by spotwelded joints 4 and aplate 6 is secured to the non visible flange of the section 1a also bymeans of spotwelded joints 4. The plates 5 and 6 lie flat on the flangesexcept their end edge sections 5a and 6a, respectively, of which endsections are of reduced width and are engaged between cams 7, 7 and 7a,7a, respectively, provided at appropriate locations on the relatedflange. In this way there are formed cavities enabling the profiledsection to be suspended by means of one or more hooks duringmanufacturing thereof.

The adjacent edges of the plates 5 and 6 at the mitrejoint 2 areprovided with teeth 8 and 9 respectively, which teeth mesh exactly whenthe profiled sections 1 and 1a are mitred together, the intermediatespace shown between the teeth being shown in the drawing only forclarity (see FIG. 2). The teeth 8 and 9 prevent relative movement of thesections 1 and la. Each plate 5 and 6 respectively is provided with acam 10 and 10a, respectively, arranged so that when the profiledsections 1 and la adjoin each other the cams l0 and 10a aresituated on aline perpendicular to the mitre-joint 2 and symmetrically on either sideof said joint. A simple clamping plate 11 having legs 13 and 13a,extending from one side thereof and defining a recess 12 therebetweenand a recess 14 on the opposite side. The clamping plate 11 is adaptedto be clamped in a flat position on the flanges of the profiled sections1 and la with the cams and 10a located in the recess 12 and engaged bylegs 13 and 13a respectively and with a curved ridge 15 of acover-member 16 received in the recess 14. The cover member 16 hasflanges 17 and 17a engaging the corresponding webs 18 and 18a of theprofiled section 1 and la, respectively. The cover member 16 extends inthe longitudinal direction along the mitre-joint 2 between the webs 18and 18a as far as the second flanges of the profiled sections 1 and In,only the second flange 19 of the section being visible in FIG. 1.

Plates 20 and 20a, are secured by spotwelded joints 4 to the said secondflanges 19 of the profiled sections 1 and la, in the same way as plates5 and 6 are secured to flanges the plates having end edge sections 21and 21a, respectively, of reduced width engaged between cams 22, 22 and22a, 22a respectively. Said plates 20 and 20a provided with cams 23 and23a, and teeth 24 and 25, said teeth being respectively adapted to meshin the same way as the teeth 8 and 9 in plates 5 and 6.

A clamping plate 26 corresponding to plate 11 is provided in order tolock the flanges 19 sealingly together on the mitre-joint 2. The plate26 includes legs 28 and 28a, defining a recess 27 therebetween, a recess29 being formed on the side of the plate 26 remote from recess 27. Theclamping plate 26 is adapted to be clamped flat on the flanges 19 withthe cams 23 and 23a located in the recess 27 and engaged by the legs 28and 28a and with the recess 29 receiving the curved ridge 15 of thecover-member 16 already mentioned, the flanges 17 and 17a of saidcover-member engaging the corresponding webs 18 and 18a of the profiledsections 1 and la, respectively.

The effect is that each clamping plate 11 and 26, when in positionnotonly draw their corresponding flanges 3 of 19 of the profiledsections 1 and 1a one towards eachother, thus sealing the mitre-joint 2at the location of said flanges but, due to the tension produced in theclamping plates, the cover-member 16 is, at its upper and lower end,firmly pressed, via the ridge 15 and the flanges 17 and 17a against thewebs 18 and 18a of the profiled sections 1 and la, respectively. Thiseffect is further intensified when the cover-member 16 consists of amaterial with slightly resilient properties, but which is mechanicallyrigid to such an extent that under the influence of the pressure exertedon its upper and lower end, its flanges l7 and 17a, respectively, engagefirmly the webs l8 and 18a of the profiled section 1 and la,respectively. As a consequence also the mitre-joint 2 extending betweenthe webs 18 and 18a is sealed without providing any additional means onsaid webs. The slightly resilient cover-member 16 also retains theclamping plates 11 and 26, in their clamped position because the counterpressure of the covermember 16 urges the clamping plates towards thecams 13, 13a, and 23, 23a, respectively.

Obviously many modifications as to details of the additional means tointerconnect the profiled sections are possible within the scope of theinvention, as defined by the appendent claims while the mitre-jointconstruction can also be applied to profiled sections having one flangeonly.

What I claim is:

1. A mitre-joint construction comprising, two identical profiledsections of a door frame or the like, one adjoining the other at amitre-angle of 45, each profiled section including a web and at leastone flange making an angle with said web, a cam fixed on each of saidflanges, clamping means arranged on said flanges of profiled sectionsadjacent the joint, said clamping means comprising a flat clamping platehaving one end profiled generally in accordance with the angle betweenthe webs of the profiled sections at the mitrejoint, the other end ofsaid plate being provided with a recess defined by edges which areengaged by said cams disposed on the said flanges of the profiledsections so that the clamping plate can be placed in respect of theplane of the flanges in an oblique direction between the webs and thecams, whereupon by driving the flat clamping plate as close to the planeof the flanges as possible, the said plate is clamped between the websand the cams, whereby the mitre-joint between the flanges as well as themitre-joint between the webs is sealed.

2. The construction set forth in claim 1 including a flat plate rigidlysecured to each of said flanges, said plates having adjacent edges andinterengaging teeth along said edges to permit inter-engagement betweensaid plates and consequently prevent relative movement between saidsections.

3. The construction as claimed in claim 2 including a resilient covermember engaging the webs of said sections at said mitre-joint, said oneend of said clamping plate abutting against said cover member to urgesaid cover member firmly against said webs.

4. A mitre-joint construction as claimed in claim 3 furthercharacterized in that said cover member comprises two flangesinterconnected together by means of a convex ridge extendinglongitudinally thereof, said clamping plate abutting against said convexridge.

1. A mitre-joint construction comprising, two identical profiledsections of a door frame or the like, one adjoining the other at amitre-angle of 45*, each profiled section including a web and at leastone flange making an angle with said web, a cam fixed on each of saidflanges, clamping means arranged on said flanges of profiled sectionsadjacent the joint, said clamping means comprising a flat clamping platehaving one end profiled generally in accordance with the angle betweenthe webs of the profiled sections at the mitre-joint, the other end ofsaid plate being provided with a recess defined by edges which areengaged by said cams disposed on the said flanges of the profiledsections so that the clamping plate can be placed in respect of theplane of the flanges in an oblique direction between the webs and thecams, whereupon by driving the flat clamping plate as close to the planeof the flanges as possible, the said plate is clamped between the websand the cams, whereby the mitre-joint between the flAnges as well as themitre-joint between the webs is sealed.
 2. The construction set forth inclaim 1 including a flat plate rigidly secured to each of said flanges,said plates having adjacent edges and interengaging teeth along saidedges to permit interengagement between said plates and consequentlyprevent relative movement between said sections.
 3. The construction asclaimed in claim 2 including a resilient cover member engaging the websof said sections at said mitre-joint, said one end of said clampingplate abutting against said cover member to urge said cover memberfirmly against said webs.
 4. A mitre-joint construction as claimed inclaim 3 further characterized in that said cover member comprises twoflanges interconnected together by means of a convex ridge extendinglongitudinally thereof, said clamping plate abutting against said convexridge.